光伏发电并网系统的仿真建模及对配电网电压稳定性影响_陈权.pdfVIP

光伏发电并网系统的仿真建模及对配电网电压稳定性影响_陈权.pdf

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光伏发电并网系统的仿真建模及对配电网电压稳定性影响_陈权

2013 3 Vol.28 No. 3 28 3 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Mar. 2013 1 1 1 2 1 1 1. 230601 2. 050021 PVGS 500kWp TM712 Simulation Model of Photovoltaic Generation Grid-Connected System and Its Impacts on Voltage Stability in Distribution Grid Chen Quan1 Li Lingdong 1 Wang Qunjing 1 Duan Xiaobo2 Ye Jingen 1 Zeng Ye 1 1. Power Quality Engineering Research Center Ministry of Education Anhui University Hefei 230601 China 2. Hebei Electric Power Corporation Shijiazhuang 050021 China Abstract In order to gain an understanding of the effects the photovoltaic(PV) generation might have upon the voltage stability in distribution grid, a general PV grid-connected power generation system(PVGS) circuit model based generalized load is built in this paper, and is applied to study the voltage stability. The simulation results show that voltage fluctuation is deeply affected by the fluctuation power, the power factor and the voltage levels of distribution grid. The basic approach to improve voltage stability is to increase and stable power factor. Finally, some simulation conclusions are showed by analysis of the data measured in a company 500kWp PV grid-connected system. Keywords Distribution grid, photovoltaic generation, generalized load, circuit model, voltage stability 1

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